Home
Class 12
PHYSICS
The strength of the magnetic field in a ...

The strength of the magnetic field in a long solenoid having 5000 turns per meter is `3.14x 10^(-2)T`. The current flowing through the solenoid is

A

`2 A`

B

`3 A`

C

`4 A`

D

`5 A`

Text Solution

Verified by Experts

The correct Answer is:
D
`B=mu_0nI therefore I=B/(mu_0n) therefore I=(3.14 xx 10^(-2))/(4pi xx 10^(-7)xx 5 xx 10^(3))=5A`
Promotional Banner

Topper's Solved these Questions

  • KINETIC THEORY OF GASES ,THERMODYNAMICS AND RADIATION

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP - 9|30 Videos

  • MAGNETISM

    MARVEL PUBLICATION|Exercise TEST YOUR GRASP|15 Videos

Similar Questions

Explore conceptually related problems

The magnetic field at a point on the axis of a long solenoid having 5 turns per cm length when a current of 0.8 A flows through it is

The strength of magnetic field inside a long current-carrying straight solenoid is:

A long cylinder of iron having cross sectional area 6 cm^2 . It is kept inside a long solenoid having 4000 turns per metre. Current flowing in the solenoid is 1.5 A. Magnetic field developed inside the core is 3.14 T. Calculate pole strength developed in the core.

A long cylinder of iron having cross sectional area 6 cm^2 . It is kept inside a long solenoid having 4000 turns per metre. Current flowing in the solenoid is 1.5 A. Magnetic field developed inside the core is 3.14 T. Calculate pole strength developed in the core.

The magnetic field on the axis of a long solenoid having n turns per unit length and carrying a current is

The coercivity of a bar magnet is 120A//m . It is to be demagnetised by placing it inside a solenoid of length 120cm and number of turns 72. The current (in A) flowing through the solenoid is:

The magnetic field B inside a long solenoid, carrying a current of 5.00 A, is (3.14 xx 10^-2) T. Find the number of turns per unit length of the solenoid.

MARVEL PUBLICATION-MAGNETIC EFFECTS OF ELECTRIC CURRENT-MCQ
  1. The strength of the magnetic field in a long solenoid having 5000 turn...

    Text Solution

    |

  2. A long solenoid carrying a current produces a magnetic field B along i...

    Text Solution

    |

  3. A straight wire of length 1 m, and carrying a current of 1.8 A, is pla...

    Text Solution

    |

  4. A charged particle of charge q moving with the velocity v, enters alon...

    Text Solution

    |

  5. A long solenoid carrying a current produces a magnetic field B alon...

    Text Solution

    |

  6. A long wire carries a steady curent . It is bent into a circle of one ...

    Text Solution

    |

  7. If a particle of charge 10^(-12) coulomb moving along thehat(x)-direct...

    Text Solution

    |

  8. A straight wire of diameter 0.4 mm carrying a current of 2A is replace...

    Text Solution

    |

  9. A long solenoid has 800 turns per meter length of solenoid. What is th...

    Text Solution

    |

  10. A solenoid is 2 m long and 4 cm in diameter. It has 4 layers of windin...

    Text Solution

    |

  11. A current of 2 A flows in an air core solenoid of length 1 m and numbe...

    Text Solution

    |

  12. A long solenoid of length L has a mean diameter D. It has n layers of ...

    Text Solution

    |

  13. Six wires carry currents I1=I A,I2=2A,I3=3A,I4=1 A,I5=4 A and I6=5 A. ...

    Text Solution

    |

  14. A vertical straight conductor carries a current vertically upwards. A ...

    Text Solution

    |

  15. Five very long insulated straight wires are bound together to form a s...

    Text Solution

    |

  16. The magnetic induction due to toroidal solenoid is independent of

    Text Solution

    |

  17. A current of 1.6 A flows through a long solenoid, having 8 turns/cm. T...

    Text Solution

    |

  18. Toroid is a

    Text Solution

    |

  19. If a current is passed through a spring then the spring will

    Text Solution

    |

  20. A straight section PQ of a circuit lise along the X-axis from x=-a/2 t...

    Text Solution

    |